EXCLUSIVE: Iran has carried out a new medium range ballistic missile test in breach of two United Nations Security Council resolutions, a senior U.S. official told Fox News on Monday.

Western intelligence says the test was held Nov. 21 near Chabahar, a port city in southeast Iran's Sistan and Baluchestan Province near the border with Pakistan. The launch took place from a known missile test site along the Gulf of Oman.

The missile, known as a Ghadr-110, has a range of 1800 – 2000 km, or 1200 miles, and is capable of carrying a nuclear warhead. The missile fired in November is an improved version of the Shahab 3, and is similar to the precision guided missile tested by Iran on Oct. 10, which elicited strong condemnation from members of the U.N. Security Council.

“The United States is deeply concerned about Iran's recent ballistic missile launch," Samantha Power, U.S. Ambassador to the U.N., said in a statement after the last Iranian ballistic missile test in October.

President Obama mentioned the Iranian missile test during a press conference on Oct. 16 and said the United States was preparing to brief the U.N. sanctions committee. He added that it would not derail the nuclear deal.

"I think what we'll be doing is we'll review, as we have in the past, any violations of U.N. resolutions, and we'll deal with them much as we have in the past," Obama said of the October incident.

A senior administration official told Fox News on Monday the White House was "aware" of reports of the missile test, but had "no further comment at this time."

Iran appears to be in a race against the clock to improve the accuracy of its ballistic missile arsenal in the wake of the nuclear agreement signed in July.

One day after Tehran and six world powers signed that nuclear accord, the UN passed resolution 2231, which compels Iran to refrain from any work on ballistic missiles for 8 years. UN Security Council Resolution 1929 was passed in 2010 and bans Iran from conducting ballistic missile tests.

The Security Council is still debating how to respond to Iran's last test in October.